OpenStack Juno on CentOS 7

If you are a beginner to Openstack, it is always better to start from the basics when trying out the quick start guides. Never try to use Puppet or Chef straightaway. Going the by the manual install & configure of packages,Databases & configuration will help in understanding the component interactions well. From there the automation scripts can be adopted.

Started with the Ubuntu for all the nodes started with the corresponding install guide. Unfortunately, there was some packaging issue of Juno components for Ubuntu.Even others have reported issues in launching an instance. Probably it will be fixed in future Ubuntu update.